The fact that they dont is another big problem with public schooling.
The fact that all teachers are trained the same is a big problem. Personally I am fan of not having "trained teachers" for anything beyond grade school
After that we should be using subject matter experts
> After that we should be using subject matter experts
No we should be using teachers, people trained to effectively communicate and teach concepts of a subject.
A subject matter expert can be an expert in a subject but terrible at communicating and teaching that concept. Knowing that concept is not equivalent to effective communication. This is analogous to Great Software engineers becoming mangers with no managing talent whatsoever.
The fact that all teachers are trained the same is a big problem. Personally I am fan of not having "trained teachers" for anything beyond grade school
After that we should be using subject matter experts